AIME 2015a Problem 7
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In the diagram below, is a square. Point is the midpoint of . Points and lie on , and and lie on and , respectively, so that is a square. Points and lie on , and and lie on and , respectively, so that is a square. The area of is 99. Find the area of . [asy] pair A,B,C,D,E,F,G,H,J,K,L,M,N; B=(0,0); real m=7sqrt(55)/5; J=(m,0); C=(7m/2,0); A=(0,7m/2); D=(7m/2,7m/2); E=(A+D)/2; H=(0,2m); N=(0,2m+3sqrt(55)/2); G=foot(H,E,C); F=foot(J,E,C); draw(A--B--C--D--cycle); draw(C--E); draw(G--H--J--F); pair X=foot(N,E,C); M=extension(N,X,A,D); K=foot(N,H,G); L=foot(M,H,G); draw(K--N--M--L); label("",A,NW); label("",B,SW); label("",C,SE); label("",D,NE); label("",E,dir(90)); label("",F,NE); label("",G,NE); label("",H,W); label("",J,S); label("",K,SE); label("",L,SE); label("",M,dir(90)); label("",N,dir(180)); [/asy]
Dataset text AIME 1983 to 2026. Quoted with source.
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